Mistuning Analysis of a Detuned Bladed-Disk With Geometrical Nonlinearities
Keyword(s):
Abstract This work concerns the nonlinear numerical analysis of mistuned blades for a rotating detuned bladed-disk structure with geometrical nonlinearities. The detuning phenomenon is taken into account through a deterministic approach by modifying material properties of some blades. A nonlinear reduced-order model is obtained by setting up a basis using a double projection method. The mistuning uncertainties are implemented through a nonparametric probabilistic approach for which the level of uncertainties is controlled by a hyperparameter. A numerical application is carried out on a bladed-disk structure made up of 24 blades whose finite element model has about 800,000 dofs exhibiting complex dynamic behaviors.
1997 ◽
Vol 119
(1)
◽
pp. 161-167
◽
Keyword(s):
Keyword(s):
Keyword(s):
2001 ◽
Keyword(s):
Keyword(s):
2020 ◽
Vol 142
◽
pp. 106748
◽
2017 ◽
Vol 13
(1)
◽
Keyword(s):
2010 ◽
Vol 132
(11)
◽
Keyword(s):